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Tennis Elbow Diagnosis Using Equivalent Uniform Voltage to Fit the Logistic and the Probit Diseased Probability Models

机译：使用等效均匀电压拟合Logistic和Probit患病概率模型的网球肘诊断

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摘要

To develop the logistic and the probit models to analyse electromyographic (EMG) equivalent uniform voltage- (EUV-) response for the tenderness of tennis elbow. In total, 78 hands from 39 subjects were enrolled. In this study, surface EMG (sEMG) signal is obtained by an innovative device with electrodes over forearm region. The analytical endpoint was defined as Visual Analog Score (VAS) 3+ tenderness of tennis elbow. The logistic and the probit diseased probability (DP) models were established for the VAS score and EMG absolute voltage-time histograms (AVTH). TV50 is the threshold equivalent uniform voltage predicting a 50% risk of disease. Twenty-one out of 78 samples (27%) developed VAS 3+ tenderness of tennis elbow reported by the subject and confirmed by the physician. The fitted DP parameters were TV50 = 153.0 mV (CI: 136.3–169.7 mV), γ 50 = 0.84 (CI: 0.78–0.90) and TV50 = 155.6 mV (CI: 138.9–172.4 mV), m = 0.54 (CI: 0.49–0.59) for logistic and probit models, respectively. When the EUV ≥ 153 mV, the DP of the patient is greater than 50% and vice versa. The logistic and the probit models are valuable tools to predict the DP of VAS 3+ tenderness of tennis elbow.
机译：要开发逻辑模型和概率模型来分析肌电图（EMG）等效均匀电压（EUV-）对网球肘的压痛反应。总共招募了39名受试者的78手。在这项研究中，表面EMG（sEMG）信号是通过在前臂区域上带有电极的创新设备获得的。分析终点定义为网球肘的视觉模拟评分（VAS）3+压痛。建立了VAS评分和EMG绝对电压时间直方图（AVTH）的逻辑模型和概率疾病概率（DP）模型。 TV50是阈值等效均匀电压，表示患病风险为50％。 78个样本中有21个（27％）出现了受试者报告并经医生确认的网球肘VAS 3+压痛。拟合的DP参数为TV50 = 153.0 mV（CI：136.3–169.7 mV），γ50 = 0.84（CI：0.78–0.90）和TV50 = 155.6 mV（CI：138.9–172.4 mV），m = 0.54（CI：0.49） –0.59）分别用于逻辑模型和概率模型。当EUV≥153 mV时，患者的DP大于50％，反之亦然。逻辑模型和概率模型是预测网球肘VAS 3+压痛的DP的有价值的工具。

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